"Search Term:Professional Sound Level Meter, Digital Noise Tester, LCD Display, Audio Vioce Describe Meter, Decibel Monitor Pressure Tester,Features:The appearance design of the digital sound level meter is novel, small and portable.Can be shut down manually and automatically.MIN value, MAX value and reading value of the sound level are clearly displayed.Data hold function.Applicable for noise engineering measurement, quality control, health prevention and various environmental noise, including noise measurement in such diverse places as factories, offices, transportation routes, families, stereo equipment and other places.Description:Easy to use and operate.Low power consumption for long time use.Simple to use and convenient to use.Ergonomic design for comfortable handling.Features:Measuring range: 30~130 dBAPrecision: 1.5dBRequency Response: 31.5Hz-8KHzFrequency Weighting Functions: A WeightingResolution: 0.1dBOperating Temperature & Humidity: 0~4010~80%RHStorage Temperature & Humidity: -10~600~90%RHPower Source: 3 x 1.5V AAA Batteries (Batteries are not included.)External Dimension: 50*33*159.5mmPackage Includes:1 x Sound Level Meter (Batteries are not included.)","